CN1652727A - Device for fixation of spinous processes - Google Patents
Device for fixation of spinous processes Download PDFInfo
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- CN1652727A CN1652727A CNA038109638A CN03810963A CN1652727A CN 1652727 A CN1652727 A CN 1652727A CN A038109638 A CNA038109638 A CN A038109638A CN 03810963 A CN03810963 A CN 03810963A CN 1652727 A CN1652727 A CN 1652727A
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- plate
- post
- spinous process
- plane
- bearing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7068—Devices comprising separate rigid parts, assembled in situ, to bear on each side of spinous processes; Tools therefor
Abstract
A fixation device for use in association with ALIF procedures includes a couple of spaced plates having integral spikes on facing surfaces thereof for pressing into spinal processes of adjacent vertebrae. One of the plates has a spherical socket which captures a spherical head end of a post whose other end is received through an aperture in the other plate. The socket mounting is arranged to enable the post to pivot therein for at least two degrees of freedom to a limited extent, enabling angulation between the two plates so as to accommodate the different thicknesses and orientations of the spinal processes on adjacent vertebrae. The reception of the post in the second plate enables adjustment of spacing between the plates to accommodate effective installation of the assembly on the spinal processes by a compression instrument, and permanent reliable maintenance of that spacing following removal of the compression instrument. The cross-sectional configuration of the post and a receiver aperture in the plate inhibits rotation of the plate relative to the post about the post axis, and a set screw in the apertured plate engages a flat on the post fixing the inter-plate space as adjusted.
Description
Technical field
The present invention relates generally to field of spinal surgery, more particularly relates to the relevant device one inner structure, that be used for firm spinal column that is used for body endomixis or similar functions of placing.
Background technology
Along with the execution of local or whole discectomy operation, people use various interbody fusion devices widely, in order at the firm spinal column in related position.Some securing devices are anchored on the stem base of a fruit.For some systems, use the stem base of a fruit to require to occupy, and these devices also comprise operation and the related work time in order to implant of cutting muscle open than the screw of large space or other anchor.We believe, are not need meticulous like this equipment and operation in many cases.
Patent that authorize on April 30th, 1991, people such as Breard has disclosed a kind of prosthetic ligament that is suitable for elongated insert for the 5th, 011, No. 484.License on March 10th, 1998 in people's such as Bevan No. the 5th, 725,582, the United States Patent (USP), technology has been mentioned the system of two types as a setting, and one comprises bar and another comprises non-stretchable band or non-stretchable belt.A mentioned this system be with non-stretchable direct ring set on spinous process.People's such as Bevan patent discloses the reduced form that a kind of suggestion is able to ring set operation, and reduced form be by will twining belt (shown in Fig. 1 and 2 of this patent) around the spinous process of adjacent vertebrae simply, and then tensioning with curling they realize.People such as Bevan show other form that adopts stem pedicel screw and hook.People's such as Howland patent uses for the 5th, 496, No. 318 one to be installed in supraspinous structure, and a positioning belt 124 is arranged.People's such as Lumb patent is used the porous belts 28 that is clamped in the flexibility on the spinous process opposite side the 3rd, 648, No. 691.Fluorothene provides as an example of carrying material, and allegedly is better than mach metal tape.People's such as Kapp patent has disclosed a pair of elongated board 28 and 30 for the 4th, 554, No. 914, and they are clamped on the spinous process by passing the bolt that is drilled in the hole in the spinous process.The Samani patent adopts a U-shaped body the 5th, 645, No. 599, and it is preferably made with the titanium that is cast as a part, and has wherein with upper and lower carriage foraminous, that take the shape of the letter U substantially.Carriage may be received on the spinous process of adjacent vertebrae, and is provided with the hole therein, is bonded on bone screw or nail in the spinous process with admittance, and curls so that implant is fixed thereon in the hole.
In our view, there are one or more various shortcomings in varying degrees in these systems, such as all problem relevant with Attacking Midfielder's body endomixis (ALIF) operation: as size, big otch must be arranged, be difficult to handle, be difficult to or excessive ground auger bone or cut a hole bone and fixed durability and reliability.The present invention is devoted to overcome one or more shortcomings that fixture and system ran into of carrying out such operation at present.
Summary of the invention
Describe briefly, according to a typical embodiment of the present invention, a kind of fixture of using relatively with the ALIF operation comprises a pair of isolated plate, and described plate is formed with whole nail on its surface of facing, be used to be pressed into the spinous process of adjacent vertebrae.One of two plates are provided with a bearing, and this bearing is caught an end of a post, and this post passes the hole in another plate and admitted.Socket mounting is arranged to make post limited extent ground at least two degree of freedom that pivot therein, makes between two plates to change angle, with the different-thickness and the orientation of the spinous process that adapts to adjacent vertebrae.The gap of the admittance of post in second plate between can adjustable plate, with provide assembly by compression instrument in supraspinous effective installation, and the permanent maintenance reliably in this gap after removing compression instrument.Receiving opening in the shape of cross section of post and the plate stop plate mutually coupled columns rotate around mast axis.
Description of drawings
Fig. 1 is the rearview of the part of spinal column, and device of the present invention is fixing on the throne after the operation of Attacking Midfielder's body endomixis.
Fig. 2 is the side view of apparatus shown in Figure 1.
Fig. 3 is the axonometric chart of this device self before installing.
Fig. 4 is the top board inner surface figure under the situation in the bearing that spreader is fixed therein, and this figure is along being seen this assembly of the longitudinal axis of spreader.
Fig. 5 is that not have spreader so that stigma bearing be the inner surface figure of empty top board.
Fig. 6 be pass the line 6-6 intercepting of top board in Fig. 5 and along the being seen cutaway view of the direction of arrow.
Fig. 7 is the view of spreader.
The line 8-8 intercepting that Fig. 8 is a spreader in Fig. 7 and along the being seen end-view of the direction of arrow.
Fig. 9 passes Fig. 3 assembly in a plane that intercepts on the axis of spreader, comprising spreader axis and holding screw and along the being seen cutaway view of the direction of arrow 9-9.
Figure 10 is the front view of the amplification of the holding screw that fractures.
Figure 11 is the view along the being seen lockplate inner surface of the axis direction of spreader receiving opening.
The specific embodiment
In order to promote understanding to the principle of the invention, existing embodiment shown in reference to the accompanying drawings, and will come with concrete language it is described.Be understood that but still should give; therefore protection scope of the present invention is not limited, the replacement form of so described device and further revise and such personnel that the further application of principle as the present invention described herein are considered to be familiar with the related technical field of this present invention thinkable.
Now in detail referring to accompanying drawing, Fig. 3 and 9 particularly is clamped on the spinous process of L4 and L5 vertebra according to the device 11 of illustrated embodiment of the present invention.This device comprises a top board 12, a lockplate 13 and a spreader 14, this spreader have the head 16 and in the bearing 17 that is received in the top board pass in the lockplate hole 19 and by the end 18 admitted.Inboard or the inner surperficial 12A of the inside of facing plate 13 of plate 12 or medial surface 13A is provided with a plurality of nails 19, and they are in the face of the similar nail 21 on the inside face 13A of plate 13.When this device is compressed when on the throne, these nails thrust in the spinous process, thereby clamp adjacent vertebra.
The cylindrical shape of cross section of spreader, but have the flat surface 14F of the length of an extending column 14.One holding screw 22 screws in lockplate.After being fixed to plate on the spinous process by a tool of compression, the inner of lockplate is bearing on the flat part 14F of post, so that plate is locked onto on the post.Can use the various spinal compression tools that to buy on the market.On the outside of top board 12 or the back side, be provided with hemispheric recess 26 (Fig. 6).On the outside of lockplate or the back side, be provided with similar hemispherical recess 27 (Fig. 3).Plate is being compressed in the supraspinous process tip of the convenient placement tool of compression of these recess and being convenient to onboard with tool positioned.
Now see also Fig. 7 and 8, spreader 14 is columniform, and a spherical head 16 is at one end arranged, and terminal 18 round.Although flat part 14F is facing to a very narrow radian of post cylindrical surface, it is provided with a relative darker groove or a recess 14N in head 16.For example, when the diameter of post head is that 7.14 millimeters and column diameter are when being 4.49 millimeters, the size 14H (Fig. 8) that divides equally in the 14P of plane on the diameter line of flat part and groove 14N is 4.29 millimeters, and groove, groove or the recess 14N width 14W (Fig. 7) in post head is 2.353 millimeters.
Figure 11 is the view of lockplate medial surface 13A, and is 19 axis finding along the hole.Place, top in the hole shows a flat part 19F.Thereby the shape in this hole 19 just forms the slip that is provided between plate and the spreader, does not have cooperating of rotating.The flat part with in the hole 19 on the post is the interrupt unit of the circular form in post and hole.Post can have the slippage of providing with the hole but prevent lockplate some other shape of cross section of coupled columns rotation mutually.For example, can use the shape of polygon or key and keyway.
Please refer back to Fig. 4 and Fig. 6 and 9, be in the face of inner surface 12A and along the axis 14A top board 12 of spreader 14.Post head 16 is expressed as and is received in the bearing 17.One snap ring 31 is received among the groove 12G of bearing 17 porch, and post head 16 is positioned in the bearing.Mentioned above, the matching surface of spreader and post receiving opening 19 in the lockplate prevent plate mutually coupled columns rotate.At spreader top board end place, a cylindrical pin 32 is force-fitted in the hole 33 (Fig. 6 and 9) of top board, and protrudes among the groove 14N of post head.As shown in Figure 4, between the wall of each side of groove and pin 32, allow a narrow space.This just allows the relative spreader of top board around spreader axis 14A 10 fens narrow rotational angles (being five degree altogether to the maximum) can be arranged.
At the opposed end place of spreader, a blind hole 13B extends through hole 19 plate from the apical margin of lockplate.Hole 13B upper part diameter is bigger, and has attacked female thread, to admit the external screw thread 22T of holding screw 22.Screw is being the flat surface 14F that closely engages spreader shown in Fig. 9.Shown in Fig. 3 and 9, holding screw has on one or outside head 22U, and exposes at the upper end of screw many groove 22F are arranged, to admit the screw erecting tools.Also be provided with one group of groove 22K (Fig. 9) at the medial extremity place of holding screw.Each bar in two groups of grooves can hold one or six groove instruments, but six groove instruments of yes different-diameter.Lower end at the neck down portions 22N of holding screw is provided with an annular notch 22B, and by this annular notch, head can fracture from threaded portion after installing and screwing holding screw fully, so that the volume minimum at plate 13 outer ledge 13C places.
Now see also Fig. 9, should be understood that, in this preferred embodiment, the radius of the spherical head on the radius of the spherical part of bearing and the spreader is identical.In Fig. 9, seeming has the space at the place, top between bearing and post head.This is because the otch in the post head that groove 14N is set causes.
Should also be noted in that in Fig. 9 snap ring 31 has two chamber 31A and 31B at the hole place of passing it, and two chambers from each of snap ring towards interior extension.Chamber can be straight, but preferably recessed, and with post head identical radius is arranged.By this way, after post head was inserted in the bearing, it was inessential that snap ring with which kind of form is installed among the groove 12G in the pre-assembling of this device.Also have, this chamber has a little concavity identical with post head, thereby stigma can snugly be placed on the snap ring, is settling and is being compressed on the spinous process and with holding screw lockplate 13 lockings isolating any trend are being taken place after on the throne with the opposing plate.
As mentioned above, in top board 12, bearing is set, and post head is installed in rotation in the bearing, but make the axis 14A of plate phase coupled columns that some motions take place.The width of groove 14N makes plate rotate very limited amount (less than the angle of five degree) around mast axis by the phase coupled columns slightly greater than stop pin 32.Therefore, its holding plate is compressed in the process of spinous process in the process of implant being inserted patients back, with nail and holding screw is clamped in the process on the flat surface 14F of post parallel to each other.But top board also has relative lockplate on axial (level) plane, for example for comprising the axis 14A of post and selling the ability of change angle in the plane of 32 axis 32A.The paper plane of Fig. 9 is an example.In other words, consider that the line 6-6 among Fig. 5 is the longitudinal axis of plate 12.Plate can rotate or rotates maximum 25 degree or maximum altogether 50 degree in each side at the center of bearing 17 around this axis.Top board 12 also relatively lockplate 12 on one crown (vertically) plane, for example comprise in the axis 14A of post and the plane and change angle perpendicular to the axis of pin 32.Fig. 1,6 and 9 paper plane are examples.In other words, considering to pass the line at bearing 17 centers, such as the 32A among the 9-9 of plane, perpendicular to plane 6-6, and is the axis of pitch of plate 12.Plate 12 can rotate or rotate maximum 25 degree on its axis of pitch each side at the bearing center.
Applicable device according to the present invention carries out firmly after the operation of Attacking Midfielder's body endomixis.A structure being placed in the body proper time relevant in the position or afterwards, form a little otch at patient's back.This otch has enough sizes with holding device and apparatus.Although top board phase coupled columns can be on some degree at angle, the rotation of palette phase coupled columns is very limited.Lockplate both cannot change angle relative to post and also cannot rotate by the phase coupled columns.After cutting, if desired or mobile as required muscle with placing plate.In order before entering, to make the volume minimum, two plates can be close together as the surgeon is needed, and press close to holding screw.If plate has been installed, and the nail on it contacts with each other, and then can unscrew holding screw, thereby to open on the spinous process that plate is installed in the vertebra adjacent with the intervertebral structure position.Then, the applied compression apparatus so that plate is pressed to each other, thereby makes nail enter spinous process.Proceed compression, place fully until nail.The angle of top board phase coupled columns change be enough (as mentioned above, on the either side of centrage, can be 25 degree at most), making plate enough adapt to the different-thickness and the shape of the spinous process of adjacent vertebrae, thereby nail is placed in the spinous process of adjacent vertebrae fully.In order when admitting post head 16, to make the thickness minimum of top board, opening 12E (Fig. 5 and 6) is set in top board at bearing 17 places.Almost very close to each other between the spherical cavity of post head and bearing, thus provide closely but slidably cooperate.Opening 12E has strengthened after outside the patient body parts and autoclave effect before implanting, that be used to clean post head and bearing.Although unlikely can need, after being placed in plate on the spinous process, if necessary, can push the post head 16E that exposes in opening 12E to snap ring slightly along the direction (Fig. 9) of arrow 41.
After being placed in plate on the spinous process fully, utilize the screwdriver that has the groove that matches with the one group of groove in outside, trip bolt is tightened on the flat part 14F of spreader.When reaching surgical the requirement, fixedly finish, just apply extra torque, fracture from threaded portion with head, and abandon trip bolt holding screw.Make this position closure then, finish stabilization procedure.Holding screw reliably holding plate in supraspinous clamping force.At any time, if this device is removed in decision, then all inside groove receivability one screwdrivers less, slotted head are to unscrew holding screw.
In compression process, and guarantee that post correctly places, top board 12 can help guarantee fully to settle nail in the ability that post 14 tilts and lockplate 13 changes angles relatively on the both sides of two spinous process.The cervical region that the ability that top board phase coupled columns tilts is subjected to head is resisted against the restriction of the joint on the inward flange of snap ring 31.Angle change in the plate phase coupled columns plane in office is limited in mast axis 14A respectively to about 25 degree by snap ring edge.
To snap ring whether as illustrated in fig. 4 the location still on the opposite side of the mast axis in Fig. 4 or on the level or under the selection at 45 degree places can be depending on surgical idea what be only the strictness that the angle of the focused attention of answering changes and limit the part place.
Although the example of shown device puts on L-4 and L-5, this device is implantable on the spinous process at other grade place.Height to T-3 level can be suitable position.Also have, also can consider the plate of spanning more than one-level.The shape of plate can be different at different level places.Shown in the heterocelous shape and size of plate 12 and periphery 13, identical in fact consistent with the lordotic curve in territory, lumbar region substantially.In the present example, edge 1 2C of concavity and the edge 12X of convex have common center, and this center is away from plate and be arranged in the plane of the face 12A of plate.This is common is centered close on the axis of pitch of plate, and this axis of pitch mentioned such as top, and is positioned on the radius of the public center of curvature of center to the edge 12C of bearing 17 and 12X.Can use the plate face of non-straight.Can use except shown in the banana-shaped profile edge shape.Can use the material of various biocompatibles.Titanium-6A-4V ASTMF-136 is an example of plate, pin, post, locking ring and screw material.Also can use other material.
Because whole device can be assembled external before implanting, and did not stop the excessive bulk of implanting, so be helpful aspect many component device of avoiding assembling in vivo.This all-in-one-piece method has reduced to implant the size of required otch.Even this device is pre-assembled, but it still can make plate change angle relative to each other in two planes, makes this device can adapt to the variation of spinous process thickness and geometry aspect.Use whole nail but not screw or the shape that need carry out cutting or other processing to spinous process have been simplified the firmly operation of spinous process ALIF after.Engage spreader in a plate in a fixed manner, can need not to use independently bolt is connected all plates with cable.
Although it is in accompanying drawing and aforesaid explanation, described the present invention in detail, that these accompanying drawings and explanation should be considered to be used for explanation rather than do restriction in characteristic aspect.Should be understood that, only to illustrate and illustrated preferred embodiment, and claimed all changes and the modification that falls in the protection domain of the present invention.
Claims (34)
1. one kind is used for the fixed implantable device of spinous process, and this device comprises:
The first and second isolated plates, a surface of described first plate have the surface in the face of described second plate;
Be connected to a post of each described plate, and described post extends to the described opposed face of described second plate from the opposed face of described first plate;
Described post to the connection of described first plate is pivotable, can change the attitude of described relatively second plate of described first plate; And
Described post to the connection of described second plate is adjustable, can change the gap between described first plate and described second plate.
2. device as claimed in claim 1 is characterized in that,
In described second plate hole is arranged,
The part of described post is received in the described hole slidably; And
One holding screw is received in described second plate, and engages post is fixed to described second plate with described post.
3. device as claimed in claim 2 is characterized in that,
Described post part and described hole have the surface that cooperatively interacts, and the shape on described surface is configured as and is used to prevent that described second plate from rotating relative to described post.
4. device as claimed in claim 3 is characterized in that,
The surface that cooperatively interacts is flat surface on described and the flat surface in described hole.
5. device as claimed in claim 1 is characterized in that,
In described second plate hole is arranged;
Some is received in described post in the described hole slidably; And
The described post of admitting slidably partly is to be received in un-rotatably in the described hole, rotates relative to described post to prevent described second plate.
6. device as claimed in claim 5 is characterized in that,
Described all parts of admitting slidably are elongated, have cylindrical outer surface substantially, and this outer surface has the interrupt unit of a longitudinal extension in cylindrical shape; And
Described hole has substantially cylindrical hole thorax, this hole thorax have with the post part on interrupt unit match, prevent the axially extended interrupt unit that second plate rotates on post.
7. device as claimed in claim 5 is characterized in that,
Described post partly is elongated, and has one solid, the shape of rounded cross section substantially, but lack one arc; And
Described device is provided with and is used to prevent the device that rotates, and described device is included in a flat surface that lacks arc part longitudinal extension on described post part, and this flat surface engages a flat surface in described hole ordinatedly.
8. device as claimed in claim 6 is characterized in that, also comprises:
On described second plate, be used for described post is locked on described second plate between described plate, to fix the device in a selected gap.
9. device as claimed in claim 8 is characterized in that, the described device that is used to lock comprises:
Screw in described second plate and can enough closely engage device with a flat surface of described post part to prevent that described post part from sliding in described second plate.
10. device as claimed in claim 1 is characterized in that,
Described opposed face is provided with the nail group, and described nail protrudes out from described surface, thrusting spinous process in the space between described plate, thereby realizes between the described plate fixing to spinous process.
11. device as claimed in claim 10 is characterized in that,
Described opposed face is straight.
12. device as claimed in claim 1 is characterized in that,
First plate has a bearing that has a center;
Described post has a longitudinal axis and is received in a head in the described bearing, and described head can pivot in described bearing, and by this, described post can the described opposed face of described relatively first plate pivot in two planes that are perpendicular to one another;
Described post has a groove in described head; And
Described first plate has a pilot pin that protrudes in the described bearing, and described pilot pin is received in the described groove to stop described first plate to rotate in the plane perpendicular to the axis of described post relative to described post.
13. device as claimed in claim 12 is characterized in that,
Described post at one end has described head, and has from the guide surface of described head towards the other end extension of described post;
Described second plate has a hole, and passes this hole and admit described post; And
The guiding that guide surface on the described post of described Kong Youyu engages is followed the surface, rotates in the plane perpendicular to mast axis relative to described post to prevent described second plate.
14. device as claimed in claim 13 is characterized in that,
Guide surface is straight; And
Hole in described second plate is screwed the holding screw interception into described second plate, and closes with described straight guide surface termination, prevents second plate along described post translation, and prevents that described second plate from rotating relative to described post.
15. device as claimed in claim 13 is characterized in that,
Described second plate is elongated, has a longitudinal axis on one first plane that is arranged in described two planes, and second plate has an axis of pitch on one second plane that is arranged in described two planes;
Described second plane is perpendicular to described first plane; And
Described first plate is elongated, has a longitudinal axis that is arranged in described first plane and can pivots on described first plane, and described first plate has an axis of pitch that is arranged in described second plane and can pivots on described second plane
16. device as claimed in claim 15 is characterized in that, also comprises:
Locating ring in described bearing, the size of described locating ring becomes with placement configurations to engage described post when pivoting in described first plane and described second plane, and being limited in less than the center from bearing with the maximum angle change of described axis in described first and second planes with described first plate is 25 degree.
17. device as claimed in claim 16 is characterized in that,
Described first plate and described second plate are arranged in substantially spaced apart relation abreast, and described post is across the gap between the described plate;
One surface of described first plate is in the face of a surface of described second plate; And
The described surface of facing is provided with the nail group, and described nail protrudes out from described surface, to thrust spinous process in the space between described plate.
18. device as claimed in claim 17 is characterized in that,
The described surface of facing is straight.
19. device as claimed in claim 18 is characterized in that,
Described plate is the profile of banana-shaped.
20. device as claimed in claim 19 is characterized in that,
The axis of pitch of described second plate be around away from concentrically ringed, the concavity of described plate at the center in the space of described second plate and the radius conllinear of convex concentric edge, by this, described edge forms the heterocelous shape of described second plate in the plane of the described opposed face of described second plate.
21. device as claimed in claim 20 is characterized in that, also comprises:
A holding screw that protrudes out towards described center from described concavity edge.
22. device as claimed in claim 21 is characterized in that,
One instrument receptacle is arranged on the described holding screw.
23. device as claimed in claim 22 is characterized in that,
Described holding screw has one first threaded portion that begins at described abutting end place, has one first instrument receptacle opens in described first threaded portion, and the described first instrument receptacle opens is towards leaving the direction of described concavity edge towards the center;
Described holding screw has one second instrument receptacle opens, and the described second instrument receptacle opens is towards leaving described concavity edge towards described center; And
Described holding screw has the part that thickness reduces, with so that separate head from threaded portion after being installed in therapentic part.
24. device as claimed in claim 1 is characterized in that,
Described first plate has a bearing;
The described described opposed face split shed that is seated against described first plate;
Described post has a head that is received in the described bearing, and described post protrudes out outside the opposed face of described first plate, and can pivot in described bearing, and by this, described post can pivot by described relatively first plate in two planes;
Have a bearing near opening in the back of the body surface of described first plate; And
The part of described post head is exposed in the described opening.
25. device as claimed in claim 24 is characterized in that, also comprises:
Locating ring in described bearing is in order to remain on described head in the described bearing.
26. the method for the spinous process of an immobilized patients, this method comprises:
All parts are assembled into an implant assembly, and described implant assembly comprises first and second plates, and an end of a post is installed in the bearing in first plate pivotally, and the opposite end of post is received in second plate slidably;
Leave an otch on one's body the patient
Insert this assembly to be positioned near the spinous process;
Slip second plate on post, thus between first and second plates, provide the space, between first and second plates, to admit spinous process;
Plate is compressed on the spinous process; And
Holding plate is compressed on the spinous process, and with a holding screw described second plate holder is tightened on the post.
27. method as claimed in claim 26 is characterized in that, also comprises:
Described plate is being compressed in the described supraspinous process, at least one plane, is making relative second plate of first plate change angle.
28. method as claimed in claim 27 is characterized in that, also comprises:
Described plate is being compressed in the described supraspinous process, in two planes, is making relative second plate of first plate change angle.
29. method as claimed in claim 28 is characterized in that, also comprises:
In that described plate is compressed in the described supraspinous process, the nail on the described plate is pressed into spinous process.
30. method as claimed in claim 28 is characterized in that,
In crown and axial plane, make relative second plate of first plate change angle.
31. method as claimed in claim 26 is characterized in that, also comprises: inserting this assembly with before being positioned near the spinous process,
Second plate is brought on first plate;
Lock second plate of drawing close with a holding screw that second plate holder is tightened on the post;
A kerf is left at back the patient;
Insert this assembly then to be positioned near the spinous process;
Insert a screwdriver and unclamp holding screw;
Second plate that on post, slides, thus interval between the described plate increased;
Want the fixed position of wanting near moving to spinous process; And
Then plate is compressed on the described spinous process.
32. method as claimed in claim 31 is characterized in that, also comprises:
The fixing of opposed face of described plate engaged with described spinous process; And
Plate is being compressed in the supraspinous process, is forcing nail to enter the spinous process that is engaged.
33. method as claimed in claim 32 is characterized in that, also comprises:
When nail being compressed in the spinous process that is engaged, use a screwdriver that second plate is locked on the post
34. method as claimed in claim 33 is characterized in that, also comprises
The head of holding screw fractures; And
Closed described otch.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/147,554 US7048736B2 (en) | 2002-05-17 | 2002-05-17 | Device for fixation of spinous processes |
US10/147,554 | 2002-05-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1652727A true CN1652727A (en) | 2005-08-10 |
CN100337600C CN100337600C (en) | 2007-09-19 |
Family
ID=29419030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB038109638A Expired - Fee Related CN100337600C (en) | 2002-05-17 | 2003-05-01 | Device for fixation of spinous processes |
Country Status (10)
Country | Link |
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US (1) | US7048736B2 (en) |
EP (2) | EP1418854B1 (en) |
JP (1) | JP4299236B2 (en) |
KR (1) | KR101004937B1 (en) |
CN (1) | CN100337600C (en) |
AT (1) | ATE482660T1 (en) |
AU (1) | AU2009200016A1 (en) |
CA (1) | CA2485174C (en) |
DE (1) | DE60334357D1 (en) |
WO (1) | WO2003099147A1 (en) |
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WO1999021501A1 (en) * | 1997-10-27 | 1999-05-06 | Saint Francis Medical Technologies, Llc | Spine distraction implant |
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US7029473B2 (en) * | 1998-10-20 | 2006-04-18 | St. Francis Medical Technologies, Inc. | Deflectable spacer for use as an interspinous process implant and method |
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US6733534B2 (en) * | 2002-01-29 | 2004-05-11 | Sdgi Holdings, Inc. | System and method for spine spacing |
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- 2003-05-01 AT AT03721989T patent/ATE482660T1/en not_active IP Right Cessation
- 2003-05-01 KR KR1020047018574A patent/KR101004937B1/en not_active IP Right Cessation
- 2003-05-01 JP JP2004506675A patent/JP4299236B2/en not_active Expired - Fee Related
- 2003-05-01 CN CNB038109638A patent/CN100337600C/en not_active Expired - Fee Related
- 2003-05-01 WO PCT/US2003/013662 patent/WO2003099147A1/en active Application Filing
- 2003-05-01 DE DE60334357T patent/DE60334357D1/en not_active Expired - Lifetime
- 2003-05-01 EP EP03721989A patent/EP1418854B1/en not_active Expired - Lifetime
- 2003-05-01 EP EP10180418A patent/EP2275047A3/en not_active Withdrawn
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2009
- 2009-01-02 AU AU2009200016A patent/AU2009200016A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
KR20050000425A (en) | 2005-01-03 |
WO2003099147A1 (en) | 2003-12-04 |
US20030216736A1 (en) | 2003-11-20 |
DE60334357D1 (en) | 2010-11-11 |
EP1418854B1 (en) | 2010-09-29 |
CA2485174A1 (en) | 2003-12-04 |
EP2275047A2 (en) | 2011-01-19 |
EP1418854A1 (en) | 2004-05-19 |
JP4299236B2 (en) | 2009-07-22 |
US7048736B2 (en) | 2006-05-23 |
JP2005525907A (en) | 2005-09-02 |
KR101004937B1 (en) | 2010-12-29 |
CN100337600C (en) | 2007-09-19 |
CA2485174C (en) | 2011-01-04 |
AU2009200016A1 (en) | 2009-02-05 |
EP2275047A3 (en) | 2011-10-05 |
ATE482660T1 (en) | 2010-10-15 |
AU2003225270A1 (en) | 2003-12-12 |
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